| From | "Paul E. McKenney" <> | Subject | [PATCH RFC tip/core/rcu 01/30] net: convert to rcu_dereference_index_check() | Date | Wed, 14 Jul 2010 13:09:35 -0700 |
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The task_cls_classid() function applies rcu_dereference() to integers, which does not work with the shiny new sparse-based checking in rcu_dereference(). This commit therefore moves to the new RCU API rcu_dereference_index_check().
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> --- include/net/cls_cgroup.h | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h index 726cc35..dd1fdb8 100644 --- a/include/net/cls_cgroup.h +++ b/include/net/cls_cgroup.h @@ -45,7 +45,8 @@ static inline u32 task_cls_classid(struct task_struct *p) return 0; rcu_read_lock(); - id = rcu_dereference(net_cls_subsys_id); + id = rcu_dereference_index_check(net_cls_subsys_id, + rcu_read_lock_held()); if (id >= 0) classid = container_of(task_subsys_state(p, id), struct cgroup_cls_state, css)->classid; -- 1.7.0.6
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